Combined gas-producer and superheater



e. F. RENDALL. COMBINED GAS PRODUCER AND SUPERHEATER.

APPLICATION HLED JUNE 29, I917.

Patented Jan. 18, 1921.

UNITED STATES PATENT OFFICE.

GEORGE F. KENDALL, or NEW YORK, 1v. r.,hjssionoa rocnnou recovers COMPANY, A CORPORATION or DELKWBARE.

COMBINED GAS-PRODUGER END" snrnnnnh'rnn.

Specification of Lean-s Patent. Patee Ja 1 9 Application filed June 29, 1917. Serial No. 177,672.

To all to hem it ma yconcem y Be it known that I, GEORGE F. BENDALLJ/EL citizen of the United :States, residing inthe city and 'county of New York,-Stateof New York, have invented a new and useful Combined Gas-Producer and Superheater, of Whichthe following is a specification.

My invention comprehends a gas producer or retort of novel construction more particularly adapted for use in conjunction with the structure of my previous patent on apparatus for producing gas, #903,503, patented November 10th, 1908. y

One object of my invention is to provide a novel gas producer wherein a super-heater is located in the combustion chamberor retort of the gas producer to utilize the generated gases in the combustionchamber to superheat "steam supplied to the superheater fromwithout the producer. a

A still further object arm invention is to provide a coil of superheated pipes in the combustion chamber of the gas producer, together with means for discharging the superheated steam in an equally distributed atomized volume through a bed of live carbonaceous material in the combustion chamber tomix with the gases generated from the carbonaceousrnaterial contained in the combustion- 'chamber.

Another object of my invention is to pro vide a gas producer consistingof a combustion chamber and :a steam chamber in com- IIIiMIlQiLlL lOHWl-Ull each otherpa superheater in the combustion chamber, a discharge pipe of the superhealter leading from the combustion chamber to the steam chambersaid pipe being: providedwith a nozzle on one end thereof to direct said superheated steam downward against the bottom of the steam chamber to thoroughly atomize the superheated steam and also equal-1y distribute the volume of steam in passing upward through a bed of livecarbonaceous material.

Another object of my inventionisto provide a gas producer or retort of this character "whereby the superheated steam gen orated in said retortpis utilized to cause a suction draft in said furnace to promote combustion, also means for controlling 521d draft to most efficiently effect combustion of the carbonaceous material contained in'said retort.

For the purpose of illustrating my invention, I have shown in the accompanying drawing one form thereof which is atpresentpreferredby me, since the same will be found an practice to give satisfactory and reliable results, although it isrto be understood that the various .i-nstrumentalities of which my invention consists-can be var-L ously arranged and organized and thatmy invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

The figure shown represents a view partly in section and side elevation of algae producer inconnection with a condenser.

Similar numerals of reference indicate corresponding parts in the figure.

Referring to the drawing. The producer 1 may be constructed to stand either upright as shown in the drawing or it may extend horizontally to suit various conditions, and is preferably constructed of a suitable refractory material 3, such as firebrick or the like, which is inclosed by the metallic casing 4. 5 designates the furnace or combustion chamber and 6 designates grate bars in the lower portion thereof separating the furnace from the steam chamber 7 below. The top of the furnace is closed by the cover plate 8 pro vided with a suitable feeding or stoking mechanism 9, whereby any desired fuel such as coalor'other carbonaceous material may be automatically or otherwise fed into the furnace 5 upon the grate-bars 6. 1 0 designates a discharge pipe, stack or chimney leading fronr-the furnace 5 of the gas producer which isprovided with suitable draft con-trolling mechanism 11 whose detailed constructiorindednot Joe-described. =12 design ates a pipe or conduit leading from the dis chargepipe 10 intermediate the producer 1 and the valve mechanism 11, the same discharging into the chamber 13 of the condenser 14c designates an apertured plate at the upper end of the condenser 2 in the apertures of which are located the ends of the pipe It will of course-be understood that a similar apel'tured plate is provided at the lowerend of the condenser thus forming an air chamber 16 within the condenser 2. The air chamber 1'6 communicates by means of the pipe 17 provided with a suitable controlling valve 18, with the steam injection pipe-19 having-a controlling valve 20 therefor. The steam injection pipe 19 discharges 19 and the steam superheater 24 located within the furnace 5 of the producer to be more fully described in'detail hereinafter.

25 designates a conduit leading from the condenser 2 and communicating with the pipes 15 in said condenser. The conduit 25 discharges into a scrubber (not shown) which comprises a container for a suitable alkaline material such as caustic soda, in order thatthe oxid contained in the gas will combine therewith and remove therefrom theinertcompounds such as carbon dioxid.

The gas after passing from the scrubber is ignited and combined with a suitable proportion of oxygen prior to passing into a furnace or retort (not shown) which contains iron turnings, filings or other metallic material adapted to be heated to a high heat so that the gas passing into and through said retort will be oxidized insuch a manner that substantially all the inert contents of the gas will be removed whence the gas in its purified state'may be led to a desired point of utilization.

The scrubber, retort and other adjuncts may be of any desired construction and arranged preferably to conform with that shown in my Patent #903,503, heretofore referred to, and it'is therefore not necessary to describe the same in greater detail.

The steam superheater 24 locatedwithin the combustion chamber or retort 5 of the gas producer forms the principal feature of mypresent invention and consists of the supply pipe 26 in communication with any suitable source of steam preferably not superheated. The pipe 26 is provided with the valve 27 for the control of the supply of steam to the coils 28 of the superheater. 29 and 30 designate discharge pipes from the superheater 24;, the pipe 29 discharging superheated steam through the nozzle 31 against the heated bed 32 of the chamber 7 to cause the steam to be directed upward in an equally distributed atomized condition to pass through the bed of live carbonaceous material supported on the grate 6 to form an admixture of the superheated steam and the gases generated from the carbonaceous materials. This admixture of superheated steam and generator gases is then passed taining retort or furnace from the producer 1 through the pipes 10 and 12'into the condenser thence into the scrubber (not shown) and the metal con- (not shown) to bring the gas into its purified state.

The discharge pipe 30 from the superheater discharges into the pipe 21 in communication with the gas discharge pipe or chimney 10. The pipe 21 is controlled by the valve 23 for the supply of steam to said chimney L0 to cause a suction or draft in the retort 5 to promote combustion of the matecontained therein,

designates an exhaust pipe for the exhaust of excess superheated steam from the superheater 24-, said pipe 33 being provided with a vaive 34.

In the operation of my novel gas producer steam is supplied in a nonsuporheated state from without the producer by the pipe 26 to the superheater 2 12 located in the retort 5 whereupon the steam becomes superheated by the heat from the combustion of the car bonaceous materials in the furnace. By the discharge pipe 29 steam is led from the superheater 2-1- to the lower steam chamber 7 Where the superheated steam is thoroughly atomized before passing through the bed of live carbonaceous material on the grate (3 so that said superheated steam thoroughly mixes with the gases generated from the carbonaceous materials to form an admixture of superheated steam and gases.

This admixture of superheated steam and gases is then discharged through the pipes 10 and 12 into the condenser where the admixture is condensed preparatory to passinginto the scrubber (not shown) and metal containing retort (not shown) to complete the process of purifying the gases.

To promote combustion in the retort 5 a draft regulator 11 is provided in the chimney 10 and above the draft regulator 11 an inlet from the pipe 21 is arranged to allow for the discharge of superheated steam into the chimney to cause an upward suction or draft from the retort 5, it being apparent that the opening of the valve 23 permits steam to flow through the pipe 30 to the pipe 21 and thence into the upper portion of the stack or chimney 10 for the purpose described.

it will now be apparent that I have devised a novel and useful construction of a combined gas producer and superheater which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a preferred embodiment thereof which will be found in practice to give satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advanta es.

Having thus described my invention, w rat I claim as new and desire to secure by Letters Patent, is

In a device of the character stated, a gas producer, a combustion chamber therein, a grate inthe lower portion thereof, a bed below said grate forming a steam chamber beveying heated air thereto, a branch from said tween said bed and said grate, a steam supersuper-heating coil discharging superheated heating coil in said combustion chamber, a steam into saidpassage, and a conduit 1eaddischarge pipe from said superheatin coil ing from said gas producer to said con- 15 terminating in a downwardly deflecte nozdenser, for conveying superheated steam and zle discharging superheated steam downgases thereinto. wardlyi against said bed prior to its passage upwardly through the incandescent carbona- GEORGE B ceous materials in said combustion chamber Witnesses: a a condenser, a passage leadin from sai E. HAYWARD FAIRBANKS,

condenser to said steam cham er for con- C. D. MOVAI. 

